Humdrum and Lowborn

Humdrum adjective - Causing weariness, restlessness, or lack of interest.

Lowborn and humdrum are semantically related In some cases you can replace term "Lowborn" with "Humdrum", this adjectives are similar.

Lowborn adjective - Belonging to the class of people of low social or economic rank.

Humdrum and lowborn are semantically related in poor topic. Sometimes you can use "Humdrum" instead an adjective "Lowborn".